quword
趣词
Word Origins Dictionary
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
base jump
"A parachute jump from a fixed point, typically a high building or promontory, rather than an aircraft", 1980s:
base
from
b
uilding,
a
ntenna-tower,
s
pan,
e
arth (denoting the types of structure used).